Image enlargement method based on bilateral quadratic b-spline interpolation without offset
A spline interpolation and image technology, which is applied in the field of image enlargement based on bilateral quadratic B-spline interpolation without offset, can solve the problems of large amount of calculation, blurred enlarged image, and vibration of image signal, so as to save calculation amount, The effect of reducing shock
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[0029] Such as figure 1 As shown, the implementation steps of the image enlargement method based on the bilateral quadratic B-spline interpolation without offset in this embodiment are as follows:
[0030] (1) Select a part of the original image as the target image, and determine the number of pixels in the target image according to the size and magnification of the original image.
[0031] (2) For a target pixel of the target image, determine its coordinates in the original image, and then divide the coordinates of the target pixel by the magnification of the original image to obtain the target floating point coordinates.
[0032] (3) if figure 2 As shown in , the 4×4 pixels in the original image whose horizontal and vertical coordinates are closest to the position are selected as the sampling points for interpolation. According to the target floating-point coordinates obtained in step (2), select two columns of pixels on the left and right of the coordinates and two rows ...
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